low power light, may be a vac leak
This is sign for Tyre Air pressure issue (I got an answer from Nissan Service Adviser)
The TPM system in a 2007+ generation Nissan Altima has dashboard light that comes on when there is a difference in tire pressure between two tires. There is a U shaped tire image with an exclamation point in it, which means you have to check tire pressures on all four tires.
Low tire pressure.
An exclamation mark after a number is the symbol for the factorial function.
an exclamation point !
In a 2004 Nissan Sentra, the hood release latch is located inside the vehicle on the driver's side. You can find it near the lower left corner of the dashboard, close to the door. It typically has a symbol of a car with an open hood. Pulling this latch will release the hood, allowing you to access the engine compartment.
The exclamation mark on any sign is an alarm or warning. With a fire symbol, the sign is warning of combustibles nearby.
The Factorial symbol is the exclamation point. (!) This symbol means to multiply a row of natural descending numbers.
The symbol "!" is called an exclamation mark. It is used in writing to indicate strong feelings, commands, or exclamatory statements.
Usually, " warning!!!"
! is an exclamation.? is a question mark.
If it is to the left of the 1 key it is called the tilde key